DRS is already such a major factor in the game. Not sure another zone on some tracks would positively benefit iGP. If anything, I feel like DRS should be made less powerful.
I would wholesomely reject the idea of additional DRS Zones.
When my cars are lapping faster. Last thing I need is spending half a lap trying to get out of the 1second gap which I usually do when racing the front runners but for them to catch up again to overtake me despite I could easily lap 1.5seconds faster than them per lap but for them to keep up on older tyres or heavier fuel.
When my cars pass with DRS, they usually are able to get out of DRS range within a lap and continue to lap outpacing them. Where has if the slower cars could keep overtaking again, it becomes pointless to have multiple DRS zones as they would negate each other.